Wire-Wound Surface Mount Inductors

Wire wound surface mount inductors are passive circuit components, meaning they require an external power source. They have a core made of a magnetic metal like iron with wire wound around it. Energy is stored in a magnetic field when an electrical current flows through the coiled wire which has thick insulation to make the inductors suitable for use with larger currents.


What are wire wound surface mount inductors used for?

They are typically found in car audio and electronic control units (ECUs) because they can block or filter radio frequencies. Unwanted radio frequencies can interfere with audio sound quality and disrupt electrical circuits. These inductors are also used in electronic equipment used in communication infrastructures and mobile base stations.

This ability to minimise interference makes them ideal for use with DC/DC converters in power distribution systems too.

Types of wire wound surface mount inductors

Some inductors have added magnetic shielding which blocks unwanted magnetism that can interfere with the circuit. Some wire wound inductors are wound with special techniques that enhance performance and reduce the unit size to save space in circuit boards.


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Description Price Inductance Maximum DC Current Package/Case Length Automotive Standard Depth Height Diameter Dimensions Shielded Tolerance Maximum DC Resistance Series Core Material
RS Stock No. 916-4166
Mfr. Part No.NL453232T-101J-PF
BrandTDK
TWD8
Each (In a Pack of 25)
units
100 μH 110mA 4532 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - - NL Ferrite
RS Stock No. 170-3280
Mfr. Part No.NL453232T-101J-PF
BrandTDK
TWD6
Each (On a Reel of 500)
units
100 μH 110mA 4532 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - - NL Ferrite
RS Stock No. 604-2634
Mfr. Part No.NL453232T-101J-PF
BrandTDK
TWD13
Each (In a Pack of 10)
units
100 μH 110mA 1812 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - ±5% - -
RS Stock No. 748-7108
Mfr. Part No.IHLP2525CZER100M01
BrandVishay
TWD41
Each (In a Bag of 5)
units
10 μH 3A 2525 6.86mm - 6.47mm 3mm - 6.86 x 6.47 x 3mm Yes ±20% 105mΩ IHLP Metal Composite
RS Stock No. 825-1865
Mfr. Part No.SRP4012TA-2R2M
BrandBourns
TWD32
Each (In a Bag of 5)
units
2.2 μH 2.8A 4012 4.45mm AEC-Q200 4.06mm 1mm - 4.45 x 4.06 x 1mm Yes ±20% 80mΩ SRP4012TA Carbonyl Powder
New
RS Stock No. 172-7212
Mfr. Part No.SRP4012TA-2R2M
BrandBourns
TWD36
Each (On a Reel of 4000)
units
2.2 μH 2.8A 4012 4.45mm AEC-Q200 4.06mm 1mm - 4.45 x 4.06 x 1mm Yes ±20% - SRP4012TA Carbonyl Powder
RS Stock No. 743-5185
Mfr. Part No.SRN8040-470M
BrandBourns
TWD13
Each (In a Bag of 10)
units
47 μH 1.5A 8040 8mm - 8mm 4mm - 8 x 8 x 4mm Yes ±20% 190mΩ SRN8040 Ferrite
New
RS Stock No. 172-8423
Mfr. Part No.SRN8040-470M
BrandBourns
TWD16
Each (On a Reel of 1000)
units
47 μH 1.5A 8040 8mm - 8mm 4mm - 8 x 8 x 4mm Yes ±20% - SRN8040 Ferrite
RS Stock No. 106-5325
Mfr. Part No.LQH43PN151M26L
BrandMurata
TWD7
Each (In a Pack of 20)
units
150 μH 280mA 4532 4.5mm - 3.2mm 2.6mm - 4.5 x 3.2 x 2.6mm Yes ±20% 2.362Ω LQH43PN_26 Ferrite
RS Stock No. 161-8090
Mfr. Part No.LQH43PN151M26L
BrandMurata
TWD4
Each (On a Reel of 500)
units
150 μH 280mA 4532 4.5mm - 3.2mm 2.6mm - 4.5 x 3.2 x 2.6mm Yes ±20% 2.362Ω LQH43PN_26 Ferrite
RS Stock No. 163-4268
Mfr. Part No.7448709330
TWD104
Each (On a Reel of 250)
units
33 μH 4.4A 1210 12.5mm - 12.5mm 10.5mm - 12.5 x 12.5 x 10.5mm Yes ±20% 100mΩ WE-DD Ferrite
RS Stock No. 744-5138
Mfr. Part No.7448709330
TWD131
Each
units
33 μH 4.4A 1210 12.5mm - 12.5mm 10.5mm - 12.5 x 12.5 x 10.5mm Yes ±20% 100mΩ WE-DD Ferrite
RS Stock No. 167-0250
Mfr. Part No.B82559A4222A020
BrandEPCOS
TWD238
Each (On a Reel of 115)
units
2.2 μH 43A ERU20 21.5mm - 21mm 12.2mm - 21.5 x 21 x 12.2mm Yes ±10% 1.2mΩ B82559A Ferrite
RS Stock No. 801-9800
Mfr. Part No.B82559A4222A020
BrandEPCOS
TWD303
Each
units
2.2 μH 43A ERU20 21.5mm - 21mm 12.2mm - 21.5 x 21 x 12.2mm Yes ±10% 1.2mΩ B82559A Ferrite
RS Stock No. 748-7094
Mfr. Part No.IHLP2525CZER2R2M01
BrandVishay
TWD51
Each (In a Bag of 5)
units
2.2 μH 8A 2525 6.86mm - 6.47mm 3mm - 6.86 x 6.47 x 3mm Yes ±20% 20mΩ IHLP Metal Composite
New
RS Stock No. 173-1377
Mfr. Part No.IHLP2525CZER2R2M01
BrandVishay
TWD22
Each (On a Reel of 2000)
units
2.2 μH 8A 2525 6.86mm - 6.47mm 3mm - 6.86 x 6.47 x 3mm Yes ±20% 20mΩ IHLP Metal Composite
RS Stock No. 644-4484
Mfr. Part No.NLC453232T-100K-PF
BrandTDK
TWD7
Each (In a Pack of 10)
units
10 μH 550mA 1812 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - ±10% 500mΩ - -
RS Stock No. 789-7123
Mfr. Part No.7447779115
TWD93
Each
units
15 μH 1.6A - 7.3mm - 7.3mm 4.5mm - 7.3 x 7.3 x 4.5mm Yes ±20% 81mΩ WE-PD -
RS Stock No. 604-2814
Mfr. Part No.NL453232T-330J-PF
BrandTDK
TWD14
Each (In a Pack of 10)
units
33 μH 160mA 1812 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - ±5% - -
RS Stock No. 163-5087
Mfr. Part No.7447779115
TWD64,161
1 Reel of 1000
Reel(s)
15 μH 1.6A - 7.3mm - 7.3mm 4.5mm - 7.3 x 7.3 x 4.5mm Yes ±20% 81mΩ WE-PD -